$ git fetch github 
remote: Enumerating objects: 68, done.
remote: Counting objects: 100% (68/68), done.
remote: Compressing objects: 100% (20/20), done.
remote: Total 40 (delta 15), reused 25 (delta 8), pack-reused 0
Unpacking objects: 100% (40/40), done.
From https://github.com/grpc/grpc-java
   0376de15b..1f90e0e28  master     -> github/master
$ git merge --ff-only 
Updating 0376de15b..1f90e0e28
Fast-forward
 core/src/main/java/io/grpc/util/CertificateUtils.java     |  18 +++++++--
 core/src/test/java/io/grpc/util/CertificateUtilsTest.java |  10 +++++
 testing/src/main/resources/certs/README                   |   5 +++
 testing/src/main/resources/certs/ecdsa.key                |   5 +++
 xds/src/main/java/io/grpc/xds/Bootstrapper.java           |  93 +++++++++++++++++++++++++++++++++++++++++++-
 xds/src/main/java/io/grpc/xds/BootstrapperImpl.java       | 135 +++++++++++++++++++++++++++++++++++++++++++++-------------------
 xds/src/test/java/io/grpc/xds/BootstrapperImplTest.java   |  96 +++++++++++++++++++++++++++++++++++++++++++++
 7 files changed, 318 insertions(+), 44 deletions(-)
 create mode 100644 testing/src/main/resources/certs/ecdsa.key
$ ./gradlew -PskipAndroid=true -PskipCodegen=true build
Starting a Gradle Daemon (subsequent builds will be faster)
*** Skipping the build of codegen and compilation of proto files because skipCodegen=true
  * Skipping the build of Android projects because skipAndroid=true
> Task :grpc-core:compileJava FAILED

FAILURE: Build failed with an exception.

* Where:
Build file '/home/morgwai/projects/upstreamProjects/grpc-java/core/build.gradle' line: 68

* What went wrong:
Execution failed for task ':grpc-core:compileJava'.
> assert i != -1
         | |
         | false
         -1

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 13s
9 actionable tasks: 5 executed, 4 up-to-date

$ ./gradlew -PskipAndroid=true -PskipCodegen=true build
*** Skipping the build of codegen and compilation of proto files because skipCodegen=true
  * Skipping the build of Android projects because skipAndroid=true

> Task :grpc-xds:compileJava
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.

> Task :grpc-interop-testing:test
[jetty-alpn-agent][ warn] Could not find a matching alpn-boot jar for Java version: 11.0.11

> Task :grpc-netty:test
[jetty-alpn-agent][ warn] Could not find a matching alpn-boot jar for Java version: 11.0.11

BUILD SUCCESSFUL in 6m 31s
324 actionable tasks: 139 executed, 185 up-to-date